Arctic LTER

Weather at Toolik

Arctic LTER Database

Conditions of Use

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:

1) Acceptable use. Use of the dataset will be restricted to academic, research, educational, government, recreational, or other not-for-profit professional purposes. The Data User is permitted to produce and distribute derived works from this dataset provided that they are released under the same license terms as those accompanying this Data Set. Any other uses for the Data Set or its derived products will require explicit permission from the dataset owner.
2 ) Redistribution. The data are provided for use by the Data User. The metadata and this license must accompany all copies made and be available to all users of this Data Set. The Data User will not redistribute the original Data Set beyond this collaboration sphere.
3 ) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier. For example:

Shaver, G. 1989. Above ground biomass in acidic tussock tundra experimental site, 1989, Arctic LTER, Toolik, Alaska. Arctic LTER, Marine Biological Lab, Woods Hole, Ma 02543. 1989gsttbm http://ecosystems.mbl.edu/arc/terrest/biomass/index.shtml

4 ) Acknowledgement. The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. For example:

Data sets were provided by the Arctic LTER. This material is based upon work supported by the National Science Foundation under Grants #DEB-981022, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493.

5 ) Notification. The Data User will notify the Data Set Contact when any derivative work or publication based on or derived from the Data Set is distributed. The Data User will provide the data contact with two reprints of any publications resulting from use of the Data Set and will provide copies, or on-line access to, any derived digital products. Notification will include an explanation of how the Data Set was used to produce the derived work.
6 ) Collaboration. The Data Set has been released in the spirit of open scientific collaboration. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.

By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.

Disclaimer

While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.

Dataset URLs:	METADATA: HTML, Rich Text, XML(EML compliant) DATA: Comma Delimited, Excel file with Metadata and data
Dataset ID:	96gsgrow.04
Dataset Title:	Leave growth of Eriophorum angustifolium and Carex rotundata was measured in a long-term experimental wet sedge tundra site, Arctic LTER 1996, Toolik Lake, AK.
Investigator 1:
First Name:	Gus
Last Name:	Shaver
Organization:	Marine Biological Lab
Address line 2:	7 MBL St.
Address line 3:
City:	Woods Hole
State:	Marine Biological Lab
Zip Code:	02543
Country:	USA
Investigator 2:
First Name:	Andrew
Last Name:	Gould
Organization:
Address line 2:
City:
State:
Zip Code:
Country:
Investigator 3:
First Name:	Jim
Last Name:	Laundre
Associate Investigators:
Keywords:	Alaska, leaf growth, tundra, disturbance, populations
Abstract:	Leave growth of Eriophorum angustifolium and Carex rotundata was measured in a long-term experimental wet sedge tundra site near Toolik Lake, AK. Experimental treatments at each site included factorial NxP, greenhouse and shadehouse and were begun in 1989 (Toolik sites).
For questions about the Metadata and data contact the Investigators. For information about this web site contact:	Arctic LTER Information Manager The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole, MA 02543 Phone (508) 289 7496 Email: arc_im@mbl.edu Online URL: http://ecosystems.mbl.edu/ARC/
DATA FILE INFORMATION:
Data File URL	http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.1415&urlTail=terrest/phengwth/data/96gsgrow.csv
Data File Name	96gsgrow
Beginning Date	6/1/1996
End Date	9/1/1996
Number of Data Records	640
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes:	Version 1 10Oct96 Checked and organized data for comma delimited output. JL
	Version 2: updated attribute table and add DAS
	Version 3: Upadte LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url.
	Version 4: Updated metadata form to newer version (without site sheet). Fixed discrepency with header variable names. CH 24 Jan 2013 Updated to newer metadata with site sheet. CH March 2013.

RESEARCH LOCATION:

Location Name

LTER Wet Sedge Tundra Block 1

LTER Wet Sedge Tundra Block 2

Select Site or enter New One

Geographic Description

Wet Sedge Block 1

Wet Sedge block 2

Enter Description

Location Bounding Box

West Bounding Coordinate

East Bounding Coordinate

North Bounding Coordinate

South Bounding Coordinate

OR if single point location

Latitude

68.625388

68.647622

In Decimal Degrees

Longitude

-149.602481

-149.577298

In Decimal Degrees

Elevation

717

719

In Meters

Link to Google Map

View on Google Map


TAXONOMIC COVERAGE:
Organisms studied	Eriophorum angustifolium; Carex rotundata

Methods:	Plots were setup as indicated below, with annual fertilization treatments of 10 g/m2 Nitrogen (as NH4NO3) and 5 g/m2 Phosphorous (as triple superphosphate) . Greenhouses and shadehouses were annually set up in late May or early June and removed in the end of August or early September. Sites: Block 1 - Toolik Inlet (CT, N, P, NP, GH, GHNP, and Shade treatments) Indicated as "Block 1" Treatments began summer of 1989; one 5x10m plot/treatment Block 2 - Toolik Outlet (Same treatments) "Block 2" Treatments began summer of 1989; one 5x10m plot/treatment Notes: When measurements stopped due to tiller death or herbivory are marked with #N/A. Where cells where there are no values zeros are used. In cases where the total leaf length was unknown because of broken leaf tips the longest previous leaf length was used. In most cases these leaves had stopped growing. Sampling Description. Five individuals of each species in the control (CT), nitrogen and phosphorus fertilization (NP), greenhouse (GH), and greenhouse with nitrogen and phosphorus fertilization(GHNP) were randomly selected at each block. The tillers were tagged and labeled, with individuals numbered 1-5 at Block 1 and those number 6-10 at Block 2 The older leaves that had no visible green tissue were clipped at the base to equal lengths. The clipped leaves were used as the 0 point to measure the total length and green length of all of the remaining leaves. These measurements were taken every 10-12 days, with broken leaves, herbivory, and flower exertion noted. (12) CALCULATIONS All measurements are expressed in centimeters. TTL was determined by adding together the total leaf lengths of all leaves at each survey date. TGL was determined by adding together the green leaf lengths of all leaves at each survey date. TSL was calculated by subtracting TTL from TGL.

Data Table

Variable Name	Variable Description	Data Type	Units	DateTime Format	Code Information	Missing Value Code
Species	Plant species measured.	text
Date	Dates that tiller was measured.	datetime		dd-mmm-yyyy
Tiller	Experimental treatment and sampling number. See methods for description.	text
LF1T	The total length of leaf number 1	number	centimeter			#N/A
LF1G	The green length of leaf number 1	number	centimeter			#N/A
LF2T	The total length of leaf number 2	number	centimeter			#N/A
LF2G	The green length of leaf number 2	number	centimeter			#N/A
LF3T	The total length of leaf number 3	number	centimeter			#N/A
LF3G	The green length of leaf number 3	number	centimeter			#N/A
LF4T	The total length of leaf number 4	number	centimeter			#N/A
LF4G	The green length of leaf number 4	number	centimeter			#N/A
LF5T	The total length of leaf number 5	number	centimeter			#N/A
LF5G	The green length of leaf number 5	number	centimeter			#N/A
LF6T	The total length of leaf number 6	number	centimeter			#N/A
LF6G	The green length of leaf number 6	number	centimeter			#N/A
LF7T	The total length of leaf number 7	number	centimeter			#N/A
LF7G	The green length of leaf number 7	number	centimeter			#N/A
LF8T	The total length of leaf number 8	number	centimeter			#N/A
LF8G	The green length of leaf number 8	number	centimeter			#N/A
LF9T	The total length of leaf number 9	number	centimeter			#N/A
LF9G	The green length of leaf number 9	number	centimeter			#N/A
Comments	Comments on individual data points.	text
TTL	The sum of the total leaf lengths.	number	centimeter			#N/A
TGL	The sum of the green leaf lengths.	number	centimeter			#N/A
TSL	The sum of the lengths of senescent tissue (expressed as a negative number)	number	centimeter			#N/A
Time	The number of days since the beginning of the surveys.	number	number			#N/A
T#LVS	The total number of leaves (at each survey date).	number	number			#N/A
T#LLVS	The total number of leaves that have green tissue (at each survey date).	number	number			#N/A
T#NLVS	The total number of new leaves (at each survey date).	number	number			#N/A
T#OLVS	The total number of old leaves (at each survey date).	number	number			#N/A

	Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.